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Getting started with Matrix

Category: Matrix

Registration of new Matrix accounts has been closed for the foreseeable future. This information remains here for historical reference only. Here's how to get started on the 4d2.org Matrix homeserver....

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What limits apply to the Matrix service?

Category: Matrix

Note: This article discusses technical limits, like file size limits, data retention periods, and rate limits. If you're looking for information about what is and isn't allowed on our Matrix server, p...

4,770
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How do I get a 4d2.org email account?

Category: Email

4d2.org email accounts are available to anyone who would like private email for their personal use. "Personal use" means that you won't send spam or bulk mail, send mail for a for-profit business, or ...

3,857
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What limits apply to 4d2.org email accounts?

Category: Email

Content and Use Limitations Email accounts are for personal, non-commercial use only, and use of automated systems (including scripts) to send email is not allowed without prior approval by the admin ...

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How do I report a problem Matrix user?

Category: Matrix

If the user is on another Matrix server, or is merely being obnoxious to you, your best option is simply to block or ignore that user. You can also use the report button in your Matrix client to bring...

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Why is it called 4d2.org? Does it mean/stand for something?

Category: Company Info & Policies

It's mostly just a short domain name that we thought was cute and relatively easy to spell, with a sideways reference to the number 42. When Sarah registered 4d2.org back in 2001 for a personal hostin...

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Why was I banned from a Matrix room? What can I do now?

Category: Matrix

If you were banned from one of the Matrix rooms within the 4d2.org Space by a server admin, room admin or room moderator, a reason will be included with your ban and visible in your client. Matrix doe...

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I'm trying to register an account, but see "ERROR: Invalid domain for site key" where I should see a CAPTCHA.

Category: Matrix

This happens because you're registering an account through a client other than our hosted instance of Element at https://element.4d2.org. Please check our Getting Started Guide, because it covers this...

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Differences between ntfy.sh and ntfy.4d2.org

Category: ntfy Notification Bridge

If you're already familiar with ntfy, here's a quick list of differences between the flagship instance at ntfy.sh and our instance at ntfy.4d2.org: No paid tiers are available on ntfy.4d2.org; all us...

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Using ntfy with Tusky for Android

Category: Mastodon (4d2.social)

The popular Android Mastodon client Tusky supports push notifications being delivered through ntfy instead of Google's Firebase Cloud Messaging, which is the default way to send push notifications to ...

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Using ntfy with Android Matrix clients

Category: Matrix

Some Android Matrix clients -- in particular Element and SchildiChat -- support push notifications being delivered through ntfy instead of Google's Firebase Cloud Messaging, which is the default way t...

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What is Super Fun Happy Bot? How do I interact with it?

Category: Matrix

Super Fun Happy Bot (@bot.maubot:4d2.org) is our local instance of Maubot, a multi-purpose bot for Matrix rooms. Super Fun Happy Bot can be invited to any room, which it will then join and begin respo...

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